Selection of heat insulation for roofing

To reduce thermal losses of buildings, and accordingly, the costs for their maintenance must be insulated with roofs, which account for about 25% of all heat loss in the structure. However, many consumers have issues of the right choice of modern thermal insulation material cause some difficulties. So what kind of style Should be the heat insulation of the roof and how to choose it?
It is best to select insulation not one by one, any, parameter, and taking into account all the heat engineering and mechanical characteristics of thermal insulation, most important among which are: thermal conductivity, resistance to loads, elasticity, elasticity of material, and the technology of its installation. Almost all presented in the market of goods, insulation have a thermal conductivity coefficient of 0.04 W / mºС and below. Moreover, the lower this indicator will be, the better.
But the quality of insulation is determined by the ability of the material, over time, maintain its geometric parameters. On the basis of the tests conducted, concluding were made that ensuring reliable thermal insulation for a long time directly depends on the stability of the size and forms of the material. Also, in the process of choice, attention should be paid to the volumetric weight of the insulation, depending on the indicator, which, distinguish one or another module. So, lungs and soft insulation, which no load, with the exception of their own weight, cannot bear it, is installed in a wooden frame formed between rafters and grille. A heavy, with a large volume weight, rigid thermal insulation, which maintains a load on the weight of the roof and snow, is installed on top of the rafted.
The type of roof has its influence on the choice of insulation. For example, a slab non-flammable insulation is perfectly suitable for the pitched roof, with a density, selected depending on the steepness of the skate, from 25 to 40 kg / m³. But on a flat roof, the insulation must be tight and tough enough, as it will have to withstand the load from snow, wind or movement on the roof of people. In such cases, polystyrene foam or materials based on basalt can be used.
Among the enormous diversity of insulation, the most common and demand for consumer demand are: mineral wool, foam concrete, polyurethane foam, foamed glass, ceramzite, expanded foam, each of which has its positive qualities. However, the perfect roofing insulation should have low moisture absorption and high throughput of water vapor contained in the air.
And the main thing is that the thermal insulation of the roof is high-quality and durable, should not be saved on the materials and professionalism of the masters.
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